基于正交设计与BP神经网络优化制备硅-磷-镧复合阻燃材料  

Optimizing preparation of silicon-phosphorus-lanthanum flame retardant composite based on orthogonal design and back-propagation neural network

作　　者：王智懿[1] 孙志勇[1] 张娇[1] Wang Zhiyi Sun Zhiyong Zhang jiao(College of Energy and Engineering, Yulin University, Yulin 719000)

机构地区：[1]榆林学院能源工程学院,榆林719000

出　　处：《化工新型材料》2016年第12期46-48,52,共4页New Chemical Materials

基　　金：榆林市产学研合作项目专项基金(2015CXY-03-02)

摘　　要：以正硅酸乙酯、磷酸二氢铵、尿素、季戊四醇、氯化镧制备硅-磷-镧复合阻燃材料,基于正交设计与BP神经网络方法研究了阻燃体系与正硅酸乙酯的质量比(因素A),阻燃体系中磷酸二氢铵、季戊四醇和尿素三者的质量比(因素B),氯化镧与正硅酸乙酯的质量比(因素C)和硅胶溶液的pH值(因素D)4个因素对复合阻燃材料阻燃性能的影响。对复合材料的制备方案进行了优化并对最佳条件下材料的性能进行了表征。结果表明,各因素对阻燃性能影响的主次顺序为:因素A>因素D>因素B>因素C;最优制备配方:正硅酸乙酯∶磷酸二氢铵∶季戊四醇∶尿素∶氯化镧为1∶0.191∶0.131∶0.065∶0.0347(wt,质量比),硅胶溶液的pH=6.32;硅-磷-镧阻燃材料中的次磷酸盐可以促进致密炭层的形成,抑制能量交换,提高阻燃体系的阻燃性能。Silicon-phosphorus-lanthanum flame retardant composite was prepared with tetraethyl orthosilicate,am- monium dihydrogen phosphate, urea, pentaerythritol and lanthanum chloride. The effect of four factors, such as between basic flame retardant system and tetraethyl orthosilicate mass ratio （factor A）, urea, pentaerythritol and lanthanum chloride in basic flame retardant system mass ratio （factor B）, between lanthanum chloride and tetraethyl orthosilicate mass ratio （factor C） ,solution pH value （factor D） on flame resistant property of composite were studied by orthogonal design and back-propagation neural network. The preparation program for composite was optimized and tested. The results showed that primary and secondary sequence of factors was factor A〉factor D〉factor B〉factor C. The optimization preparation： tetraethyl orthosilicate： urea： pentaerythritol： lanthanum chloride： lanthanum chloride was 1 ： 0. 191 ： 0. 131 ： 0. 065 ： 0. 0347g, solution pH value was 6.32. Hypophosphite in the composite can promote the formation of dense carbon layer, suppressed energy exchange and enhanced flame resistant property.

关 键 词：阻燃 复合阻燃材料 次磷酸盐 优化 BP神经网络 正交设计 

分 类 号：TB34[一般工业技术—材料科学与工程]